Author

Yimeng Gu

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#artificial intelligence Preprint Oct 2025

CogniDir: Combating Cognitive Malicious Comments via Adaptive Distributional Learning for Robust Fake News Detection

CogniDir is introduced, an adaptive distributional learning framework that reformulates robust detection as a dynamic data mixture optimization problem for social media content safety by formalizing mechanism-specific cognitive adversarial paradigms to systematically expose deep-seated detector vulnerabilities.

Zhao Tong, Chun-Lin Gong, Yimeng Gu et al. · 3 citations

Conference Open access 2026

RLShield: Dynamic Jailbreak Detection for LLMs via Reinforced Adaptive Learning

RLShield is a dynamic jailbreak detection framework that employs reinforcement learning for adaptive threshold selection and incorporates three key innovations: a dynamic retrieval and LLM-based rewriting module to simulate diverse adversarial contexts; a cross-layer representation analysis to pinpoint safety-critical...

Zhao Tong, Pengfei Yang, Yimeng Gu et al. · Annual Meeting of the Associ... · 0 citations